#define _CRT_SECURE_NO_WARNINGS 1
#include <iostream>
#include "queue.h"

using namespace std;

int main()
{
	zzzyh::queue<int> que;
	que.push(1);
	que.push(2);
	que.push(3);
	que.push(4);
	cout << que.front() << endl;
	cout << que.back() << endl;
	que.pop();
	cout << que.front() << endl;

	return 0;
}